Date: Thu, 1 Nov 2001 10:06:13 +0000 (GMT) From: Doug Rabson <dfr@nlsystems.com> To: <ia64@freebsd.org> Subject: Calling ast() Message-ID: <20011101100442.K549-100000@salmon.nlsystems.com>
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I think this patch should do the right thing. It appears to work (well the box doesn't hang instantly anyway). I really need to rewrite the rest of exception.s - its a bit of a mess. Index: exception.s =================================================================== RCS file: /home/ncvs/src/sys/ia64/ia64/exception.s,v retrieving revision 1.24 diff -u -r1.24 exception.s --- exception.s 2001/10/31 20:02:28 1.24 +++ exception.s 2001/11/01 09:59:35 @@ -948,20 +948,24 @@ */ ENTRY(exception_restore, 0) - rsm psr.ic|psr.dt|psr.i // disable interrupt collection and vm - add r3=16,sp; - ;; - srlz.i - dep r3=0,r3,61,3 // physical address - ;; - add r16=TF_CR_IPSR,r3 + alloc r14=ar.pfs,0,0,1,0 // in case we call ast() + add r3=TF_CR_IPSR+16,sp ;; - ld8 rIPSR=[r16] + ld8 rIPSR=[r3] ;; extr.u r16=rIPSR,32,2 // extract ipsr.cpl ;; cmp.eq p1,p2=r0,r16 // test for return to kernel mode ;; +(p2) add out0=16,sp // trapframe argument to ast() +(p2) br.call.dptk.many rp=ast // note: p1, p2 preserved + + rsm psr.ic|psr.dt|psr.i // disable interrupt collection and vm + add r3=16,sp; + ;; + srlz.i + dep r3=0,r3,61,3 // physical address + ;; (p2) add r16=SIZEOF_TRAPFRAME+16,sp // restore ar.k6 (kernel sp) ;; (p2) mov ar.k6=r16 -- Doug Rabson Mail: dfr@nlsystems.com Phone: +44 20 8348 6160 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-ia64" in the body of the messagehelp
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